llli; l)AX(ii:R IN Till', AlK. 



riic lirsi ( irclc of 125 miles from Ili-ligolanil gives tlic nut ami home journey of an aeroplane. Tlie 250 miles circle is tlie 

 "iitwnni i' H v only. 



Till- v "iilc.H cin If is (he oiil and home journey of an airship. The 6c» miles circle is the outcrmosl line, thai is practically 

 ilie liinil, 1 in airship juutncy without any hope of return. 



If III. n hip started from Rorkuni or the Ueljji.in frontier it would be much nearer London, and doulitlcss could (^t to 



.1 I . ., i,a(.|; atjain. London «ouIrl lie well wiiliin ii.; cmt arul home range. 



London an 



